Bottle-closure.



No. 771,713. PATENTED 00 4', 1904. H. GOALE & L. s. GREBNSPELDER.

BOTTLE CLOSURE. APPLIOATION FILED JAN. 20, 1904.

N0 MODEL.

a M W g N A m im UNITED STATES Patented. October 4, 1904.

PATENT OFFICE.

MARYLAND,

ASSIGNORS TO THE CROWN CORK &

SEAL COM- PANY, OF BALTIMORE, MARYLAND.

BOTTLE-CLOSURE.

SPECIFICATION forming part of Letters Patent N 0. 771,713, dated October4, 1904.

Application filedjanuar; 20, 1904:. Serial No. 189,902. (No model.)

To all whomvit may concern:

Be it known that we, HARVEY OoALE and LEWIS S. GREENsFELDER, citizens oftheUnited States, residing at Baltimore, Maryland, have invented certainnew and useful Improvements in Bottle-Closures, of which the followingis a specification.

Our invention is a modification of a form of closure shown in acompanion application of even date herewith; and, broadly stated, itconsists of a special combination of two wellknown types of closureswith a bottle of novel character, the bottle, however, forming thesubject-matter of an independent application.

The same object is sought in the present application as in theconstruction illustrated in the companion case-name] y, greater securityand strength and less liability of waste by leakage; but instead ofconstructing an entirely new form of closure wefind that we can securesubstantially the same result by combining two well-known types ofsingle-use closures. The organization of the outside and inside closureswith the novel bottle is such, however, that while each stopper performsits duty in the old way they cooperate to produce certain results notattainable by the separate use of either.

In the drawings, Figure 1 is a central vertical section of a bottle-headwith the closures in place, while Fig. 2 is a vertical sectional viewthrough the bottle-head, the closures being removed.

We use for our inner closure preferably what is known as the Aluminiumdisclosed in the reissue patent to Painter, No. 11,685, July 26, 1898,and in its specific form in the patent of Hall, No. 541,203, of June 18,1895, and for the outer closure the stopper known as the Crown,illustrated in the patent to Painter, No. 468,258, February 2, 1892, and

we have found that these closures when used together as contemplated byus supplement and sustain each other and provide a double seal for thebottled contents. The interior closure takes the initial pressure, whilethe outer closure serves to protect the inner, and, being free from thesame degree of pressure to which the inner closure is subjected, thereis no tendency to weaken its connection with the bottle, and it thusmaterially aids to check any pressure or waste which for any reasonshould pass the inner closure.

While we have shown in the accompanying drawings two well-known forms ofclosures, we do not limit ourselves in this connection, as our inventionis extensive enough to include any independent forms of closure adaptedto cooperate and of the type adapted one for expansion within the neckof the bottle to resist effectually outward pressure and the other foruse exteriorly thereto, covering and supplementing the securityfurnished by the inner closure.

Our improved form of bottle is particularly described in anotherapplication, and this need not be enlarged upon here. It is shown at A,and its exterior is formed with a shoulder 1 for holding the cap Binplace when its flange is locked thereunder. The annular groove is shownat 2 and is fitted to retain the interior stopper O, of cup-shape,adapted to be expanded into the groove 2 by a suitable expanding-tool.In the mouth of the bottle thus formed the interior stopper 0 is placed.It is provided with a packing or gasket (Z, which is compressed in theexpansion of the cup against some part of the wall of the groove and isso held, forminga gas-tight seal. The cap B is applied over the outsidewith an interposed packing, preferably in the form of a disk 5. The capis forced down to compress the packing upon the mouth of the bottle, andthe flange is then caused to interlock with the shoulder on the outside.When the two stoppers are thus applied, a chamber 7 is formed betweenthe inner and outer stoppers, hermetically inclosing air, which isitself compressed and which expands with any expansion of the gaseouscontents of the bottle due to heat, and so effectually resists interiorpressure.

It will be seen that the forcing of the Crown packing into the air-spacereduces the space, with consequent compression of the inclosed air, andthat the inner stopper is expanded outwardly by pressure to effect aproper seal, while the external stopper is pressed inwardly to engagethe shoulder, and thus the tendency of the inward and outward lateralstrain is equalized, and the bottle-mouth is bound with metal, havingits throat or opening closed by two parallel layers of metal, with anintervening air-space. Further than this, in the application of theouter closure the sealing medium thereof by the pressure applied theretois forced or embedded into the space left around the upper edge of theinner closure or cup (.1 between it and the wall of the bottle, and asthis is the only possible outlet for leakage it is effectually preventedand at a minimum of pressure to the outer closure. The outer closure notonly therefore supplements the inner, but keeps the lip of the bottleclean and covers and protects the cup, preventing the accumulation ordeposit of dust therein, and is at the same time never subjected to thefull pressure of the gaseous contents of the bottle, for the reasonstatednamely, the sealing medium being crowded into the annular channeland embedding the edge of the inner closure, through which leakage mustoccur, if at all and this makes more effective the outer seal than whenused alone, as only a small part of the outer closure or the sealingmedium thereof is subjected to the pressure of possible leakage, andthus the liability of encountering interstices in the cork is lessened,not only on account of the limited area exposed, but also because thepressure at this point crowds the inner sealing medium into the spaceand tends to close any interstices which may exist.

l/Vhat we claim is- 1. In combination, an internal closure locatedwithin the bottle-throat, and in locking engagement therewith, anexterior closure in locking engagement with the bottle-head, and asealing medium between the outer closure and the bottle, and between theouter and inner closures, substantially as described.

2. A closure for bottles consisting of a metallic closure expandedwithin the bottle-neck and a closure in the form of a metallic capcovering the end of the bottle, whereby the upper edge .of the bottle isbound between metallic walls and a double thickness of metal is providedfor the bottle-throat, substantially as described.

3. A closure comprising an inner stopper and an outer stopperdisconnected and independent, a sealing medium between the inner stopperand the bottle and a sealing medium carried by the outer stopper andfilling the space between the upper edge of the inner stopper and theadjacent wall of the bottle, substantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

HARVEY COALE. LEWIS S. GREENSFELDER.

WVitnesses:

JOHN BLACK, CHAs. H. KoPPnLMAN.

